Prius (2010-12) Fuel :: Sudden Drop In Gas Mileage

I commuted to LA 2-3x a week. The mileage on my car is now at 90k. I have had an average of 40 mpg since new, but suddenly it began to drop. We took it to our local Toyota dealer and was told it was most likely a cable that needed to be cleaned. That was $160. It didn't work.

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Prius (2004-09) Fuel :: Unexpected Gas Mileage Drop

I've had my 2007 Driftwood Pearl Package 2 Touring a little more than a year now. I had been getting 42-46 MPG every tank until I filled up my gas tank today.

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Prius (2010-12) Fuel :: Sudden Drop In Mileage

I am using a 2012 Prius and I was running around 23KMpL average. For sometime I am seeing my mileage around 17 - 18 KMpL. What could be the reasons for this ?

The only change happened in between is that I had a accident which I had to replace the front buffer.

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Prius (2010-12) Fuel :: Gas Mileage Drop - Averaging Between 41 And 43 MPG?

I bought a 2010 Prius II (150,000 miles on it) about two weeks ago. In that time the car has been averaging between 41 and 43 MPG according to the computer, and I calculated 41.3 MPG at my last fill up. I am concerned about the MPGs. I bought a brand new Prius in 2012, it was a III model and '12 year. That car always got 48 highway, and 50 in the city. From what I understand, the 2010 and 2012 models have the same engine and transmission set up and the only difference may be the software.

So my questions are; why am I getting 7 to 9 MPG less than my old (newer) 2012 Prius? What to do to get better mileage, but what actually worked? My checklist of repairs include; check 12v battery, change out spark plugs, just changed air filter, check brakes, oil change (using Mobil 1 full synthetic 0w-20), what else should I check/replace/update,

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Prius (2010-12) Fuel :: Why Does Mileage Drop At Least 2 Mpg When Raining

It seems that my mpg gauge always drops by at least 2 mpg when it's raining, even if one goes slower because of the rain. Why is this?

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Prius (Gen 2) Fuel :: 2007 - Mileage Drop By Over 20% When Put Summer Tires

This Easter I put summer tires on my "new" (owned about 4 weeks) prius -07, and cleaned and greased brakes.

With winter tires (almost new Nokia hakka xx, stud less) I got 4.5 l/100km (52mpg) easy and 4.2 (56mpg) at best, now I get 5.5 (42mpg) and 5.3 if I struggle, if I relax and put cruise control on I get 5.8 (40mpg). I travel 100km to work every day.

Summer tires is Michelin primacy (about 2 seasons?) pumped to 3.0/2.8 bar (over inflated).

Brakes don't seem hot after drive and they was really clean and easy to move after my service so my guess is that they work fine...

Mileage went down over the weekend so I see a clear link.

It was more fun trying to hypermile at 56mpg aiming for 60 then it is at 42 aiming for 45...

12v battery charged, just in case. Still same temperature out 1-8 C. Oil and all filters changed first week (will change trans axle oil in summer). Travel to work got 4% shorter so tire size must be a small reason to the +20% problem.

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Prius (2010-12) Fuel :: New Tires Lead To Drop In Gas Mileage

Last October I needed new tires, so I had Michelin Defenders put on my 2011 Three in place of the OEM Firestones. The Michelins perform well and are nice and quiet, but...

My gas mileage (both indicated on the dash and calculated) has dropped by about ten percent. In researching the two brands of tire, I found that the OEM Firestones are rated at 836 revolutions per mile, and the Michelins are 839. I'm wondering if this is the reason for the apparent change in mileage.

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Accent RB (2012+) :: Extreme Drop In Fuel Mileage

I live in the suburbs, so I do a lot of stop and go driving. For the longest time, I would typically get 25 or 26 mpg city, as per the gauge. I would see the number climb to 41 or so in constant highway driving. I am pretty sure the fuel tank is about 10.5 gallons or so as when the low fuel light comes on, and there is only one bar left on the gas gauge, and I top up the tank, I never put more than about 9.5 - 9.8 gallons in.

All this being said, in the last few weeks I have seen a severe drop in MPG. The gauge is constantly reading about 19.5, when I hit the expressway it will climb a bit, but when I compare the miles driven to the bars on the gas gauge, the bars used to drop at about 20 miles driven, now each bar will drop at around 13-15 miles driven. We are having some extreme cold here in the midwest, as opposed to last winter when I bought the car.

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Prius (2004-09) :: Gas Mileage Drop After New 12v Battery

I replaced my 12V battery yesterday with the Optima yellow top. immediately after, my gas mileage dropped to about 16 mpg.

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Prius Plug-in 2012-15 :: EV Mileage Sudden Drop

I was driving up a hill today at about 30 mph with .9 miles remaining showing on my EV battery meter when all of a sudden it drops to 0 EV miles remaining and shows only 2 of the battery level bars (which is very very low), and the engine of course turns on. What happened?

I promise I did not push the EV power bar over its threshold. I monitor that like a hawk. I also know for a fact that it jumped from .9 to 0, because I watch that part like a hawk. This part of the trip is near the end of my drive home and I've done it about 50 times so far with no issues. With .9 miles left at that point on the hill I have always been able to make it to my driveway with .4 or .5 remaining, so this is very odd.

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Prius (2004-09) :: 2005 - Cause Of Sudden Drop In Gas Mileage?

My '05 Prius has been going strong with just passing the 200k mark recently. However about 2-3 weeks ago after I replaced the PCV valve, I started getting really bad gas mileage. I'm talking about getting an average of 45 mpg in city/highway combo down to 30 mpg. Filled up my tank twice from empty so I'm pretty sure it's not just bad gas. Highway driving does slightly better than city.

Today I noticed that my acceleration from stop is just absolutely terrible. The car responds really slow and sluggish and takes a while for it to realize I want to go. Low speed doesn't get good mileage at all. It seems I get normal mileage at almost 65 mph, not sure why.

I don't think the 100 degree weather we are having here in Texas is causing THAT much of an effect because last year and two years ago during 100 degrees, gas mileage was normal. What to check? I searched and most talk about cold weather. I have a relatively new 12V gel battery so I doubt it is that but I can try disconnecting it.

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Prius Plug-in 2012-15 :: Drop In Estimated Gas Mileage While In EV Mode

While driving in EV mode I noticed my remaining estimated gas mileage drops. I watch the dash and the EV is constantly light and it doesn't appear the the ICE is coming on. Is this normal?

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Prius (2004-09) :: Battery Is Dying / Huge Drop In Gas Mileage

Well I work overnight security and I'm able to watch movies in my car or be on my laptop at work but I ruined my battery( didn't have the car engine on) and now that my battery is dying I noticed huge drop in gas mileage .

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Prius (Gen 3) Fuel :: Fuel Mileage Reduced When Driving In Rain

We gave the Prius a good workout in the rain for the first time today. Central Florida has been having serious amounts of heavy rain, creating water covered roads in our area. Normally the digital fuel mileage display shows around 55 MPG for most of our driving. However today it dropped to the upper forties very quickly.

We were running the wipers on continuous (low and med speeds), the AC (defrost) was running to keep the condensation off the windows, and the headlights were on. I wonder if the extra resistance of the water on the road also had an effect on the fuel mileage.

Even though we hit some fairly deep water and created large amounts of splash, the car tracked straight, the brakes worked well, and the power was totally uninterrupted. Other than the poor fuel milage we were impressed.

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Prius (2004-09) Fuel :: 2008 - Sudden Drop In Fuel Economy - Water Leak?

I have a 2008 prius. Usually it gets me around 52-55mpg, I've had it since January. Since a couple of days ago its not giving me anything above 49. I know thats a normal number, but considering the fact that its usually quite a bit higher I'm wondering what the cause of the drop is. Also around the same time, when I pull out of my driveway I notice what appears to be a bit of water leakage. Its under the vehicle in the front center, and it only happens when I start the car for the day and pull out of my driveway (its on an incline).

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Scion - Xb :: 5 Speed - Gas Mileage Varied And Fuel Mileage Increased

I've had my XB 5-speed for nearly a year and 10000 miles. It as been dead on reliable and fun to drive. My gas mileage has varied from 26 to 31 in mixed driving and from 32 to 35 on the highway. I use premium fuel only because I can get it without ethanol. My fuel mileage also increased a couple of mpg due to getting the power robbing ethanol out. True it is probably not enough to offset the extra expense but I like not having the stuff in my car. My only dissatisfactions has been with the transmission gear ratios. They are way to low. This torquy engine could easily do with a ratio that would drop about 500 rpm for more relaxed highway cruising.

As it is, though, my XB will go up any hill or long grade without breathing hard! Another is the instrumentation. I don't mind the center mounted set-up but speedometer and trip meter for mpg ratings are both inaccurate. My speedo reads about 2.5 mph high and the fuel mileage read out has about the same error, also on the high side. I have the stock 16" tires. The clutch has a narrow engagement band and can be difficult to be smooth on. The car is fairly quiet, is comfortable and this years hot, humid summer has shown it has one of the best air conditioners I have ever experienced in a car. I thought it might be an electric unit rather than a belt driven compressor because there is absolutely no perceived drag when the compressor kicks on.

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Prius V Fuel :: Mileage Decrease From About 43.3 To 38.5 MPG

Recently returned from trip from Austin Tx to Monroe LA. Gas mileage decreased from about 43.3 MPG to 38.5 MPG. A little annoyed by this but I guess I can attribute this to the increased weight in the vehicle. Still taking care in for other thing. Maintenance needed light came on & I assume it may be for a 15,000 mi checkup since it is nearing that mark.

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Prius (Gen 3) Fuel :: Mileage Has Dropped To 35 MPG

2011 Prius for wife. Mileage has always been upper 40s to low 50s until the last week or so, now she is seeing 35 mpg displayed.

I have asked for a check at fill up. I just pulled the car out to wash it and noticed the engine came on right away, same when I put it back into the garage. In the past we would get part way down the driveway before the engine came on. Also did a code check and no codes found

What are the approximate outside air temps? 40s am 70s pm.

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Prius C Fuel :: Mileage Dropped From 45 To 40 Mpg

I've had my car going at 45 mpg the past 2 years. I just hit my 45k mileage mark. I drive mostly on the highway to work so getting 45 mpg is pretty good for me. This last few fill ups, I noticed my gas mileage has gone down to 40 mpg. I thought it was a mistake if it was just once but the last 7 fill ups has been that way. It just went down all of a sudden and has stayed that way.

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